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Intangible Assets | 12 Months Ended
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Dec. 30, 2017
Goodwill and Intangible Assets Disclosure [Abstract] |
Intangible Assets | Intangible assets consisted of the following:
|  | 2017 |  | 2016 |  | Weighted Average Total Amortization Period
Healthspan Research LLC Acquisition (See Note 9) |  | $ | 1,346,000 |  |  | $ | — |  |  |  | 10 years |
License agreements and other |  |  | 1,494,000 |  |  |  | 1,469,000 |  |  |  | 9 years |
Less accumulated depreciation |  |  | (1,189,000 | ) |  |  | (983,000 | ) |  |  |  |
|  | $ | 1,651,000 |  |  | $ | 486,000 |  |  |  |  |
Amortization expenses on amortizable intangible assets included in the consolidated statement of operations for the years ended December 30, 2017, December 31, 2016 and January 2, 2016 were approximately $206,000, $88,000 and $45,000, respectively. Estimated aggregate amortization expense for each of the next five years is as follows:
Years ending December: |  |  |
2018 |  | $ | 233,000 |
2019 |  |  | 233,000 |
2020 |  |  | 228,000 |
2021 |  |  | 209,000 |
2022 |  |  | 171,000 |
Thereafter |  |  | 577,000 |
|  | $ | 1,651,000 |

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- Definition The entire disclosure for all or part of the information related to intangible assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -URI http://asc.fasb.org/topic&trid=2144416 + Details
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